1.20.0

Notable Changes

Added

• Added the experimental Temporalio.Extensions.Gcp.CloudRun.Id package for long-lived
  Temporal workers on Google Cloud Run worker pools and services. Register a single CloudRunIdPlugin
  on your client's Plugins; it sets the worker identity from the Cloud Run instance at connect
  time (unless one is already configured), and workers created from that client inherit it.
• Added the experimental Temporalio.Extensions.WorkflowStreams package for durable, batched,
  offset-based publish/subscribe streams hosted by workflows, interoperable with other Temporal
  SDK Workflow Streams implementations.
• Nexus workers now decode marked Temporal System Nexus operation inputs with the System Nexus converter.
• NexusPayloadSerializer now preserves marked System Nexus envelopes while applying payload codecs only to their embedded user payloads.

Fixed

• A failing workflow task is now reported to the server only on its first attempt, with later
  attempts left to time out. Previously PayloadsTooLarge failures and history fetch failures were
  re-reported on every attempt.
• The temporal_workflow_task_execution_failed metric is now recorded for every failed workflow
  task attempt, including attempts whose failure was not reported to the server. Its
  failure_reason attribute now distinguishes GrpcMessageTooLarge, PayloadsTooLarge, and
  RequestTooLarge on every path.
• Non-sticky workflow task polling can now use spare capacity once sticky pollers have reached
  their configured or autoscaled polling limit.
• Poller autoscaling no longer lowers its target after a poll is cancelled or times out, and a
  poller in backoff keeps its slot. Resource-exhaustion errors still lower the target.

What's Changed

• chore: update baseline to 1.19.0 by @jmaeagle99 in #897
• Fix System Nexus codec serialization context by @tconley1428 in #887
• fix: apply serialization context to Nexus operation summary by @jmaeagle99 in #894
• Add experimental Workflow Streams extension by @brianstrauch in #884
• Add Google Cloud Run CloudRunIDPlugin by @seanbollin in #855
• chore: limit Dependabot NuGet to security updates by @jmaeagle99 in #905
• fix: drop redundant SourceLink package by @jmaeagle99 in #907
• chore: pin the bridge dependencies with a Cargo workspace by @jmaeagle99 in #902
• [SDK Sentinel] Fix custom slot supplier test permit ID race by @sdk-sentinel-bot in #909
• chore: update sdk-core submodule by @jmaeagle99 in #918
• chore: update sdk version to 1.20.0 by @jmaeagle99 in #919
• Handle System Nexus payloads in Nexus Worker by @VegetarianOrc in #892

SDK Core Update

Updated from temporalio/sdk-rust@399cb7a to temporalio/sdk-rust@0eb03f2

• Run Cloud-eligible integration tests with filtering in temporalio/sdk-rust#1518
• Allow normal polling when sticky is saturated in temporalio/sdk-rust#1579
• build(deps): update wit-bindgen requirement from 0.57.1 to 0.61.1 in temporalio/sdk-rust#1601
• Fix PayloadsTooLarge errors spamming WFT failures in temporalio/sdk-rust#1604
• Preserve targets after transient errors in temporalio/sdk-rust#1600
• Generate payload visitor implementations in a stable order in temporalio/sdk-rust#1608
• Update API definitions in temporalio/sdk-rust#1607
• Standalone Activities samples in temporalio/sdk-rust#1603
• feat: add RetryPolicy option under ChildWorkflowOptions in temporalio/sdk-rust#1610

New Contributors

• @brianstrauch made their first contribution in #884
• @seanbollin made their first contribution in #855

Full Changelog: 1.19.0...1.20.0